Contextual Model Abbreviations

This lists the abbreviations used in the AIRM.

A-SMGCS

Advanced Surface Movement Guidance and Control System

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:A-SMGCS


ACARS

Aircraft communication addressing and reporting system

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ACARS


ACAS

Airborne collision avoidance system

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ACAS


ACC

Area control center or area control

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ACC


ACK

Acknowledge

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ACK


ADEP

Aerodrome of Departure

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ADEP


ADES

Aerodrome of Destination

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ADES


ADS

Automatic dependent surveillance

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ADS


ADS-B

Automatic Dependant Surveillance - Broadcast

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ADS-B


ADS-C

Automatic Dependant Surveillance - Contract

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ADS-C


AFIL

Flight plan filed in the air

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:AFIL


AFIS

Aerodrome Flight Information Service

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:AFIS


AFTN

Aeronautical fixed telecommunication network

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:AFTN


AGL

Above ground level

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:AGL


AIC

Aeronautical information circular

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:AIC


AIP

Aeronautical information publication

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:AIP


AIRAC

Aeronautical information regulation and control

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:AIRAC


AIREP

Air-report

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:AIREP


AIRMET

Information concerning en-route weather phenomena which may affect the safety of low-level aircraft operations

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:AIRMET


AIS

Aeronautical information services

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:AIS


AIXM

Aeronautical Information Exchange Model

Source: EUROCONTROL-FAA AIXM v.5.1;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:AIXM


ALT

Altitude

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ALT


AMDT

Amendment (AIP Amendment)

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:AMDT


AMS

Aeronautical Mobile Services

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:AMS


AMSL

Above mean sea level

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:AMSL


ANSP

Air Navigation Services Provider

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ANSP


AOC

Air Operator Certificate

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:AOC


APP

Approach Control

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:APP


APV

Approach procedure with vertical guidance

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:APV


ARP

Aerodrome Reference Point

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ARP


ASBU

Aviation Service Block Upgrade (ICAO)

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ASBU


ASDA

Accelerate-stop distance available

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ASDA


ASLT

Airport Arrival Slot

Source: EUROCONTROL ATM Lexicon;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ASLT


ASM

Airspace Management

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ASM


ATC

Air traffic control (in general)

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ATC


ATCO

Air traffic controller

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ATCO


ATFM

Air traffic flow management

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ATFM


ATIS

Automatic terminal information service

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ATIS


ATM

Air traffic management

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ATM


ATN

Aeronautical Telecommunications Network

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ATN


ATS

Air traffic services

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ATS


ATSU

ATS unit

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ATSU


ATZ

Aerodrome Traffic Zone

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ATZ


AW

Aerial Work

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:AW


AWY

Airway

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:AWY


Bq

Becquerel

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:Bq


C

Degrees Celsius (Centigrade)

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:C


C

Coulomb

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:C


CAS

Calibrated Airspeed

Source: SESAR;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:CAS


CAT

Category

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:CAT


CAVOK

Visibility, cloud and present weather better than prescribed values or conditions (Ceiling and visibility OK).

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:CAVOK


cd

Candela

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:cd


CDL

Configuration Deviation List

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:CDL


CDO

Continuous Descent Operations (defined by ICAO)

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:CDO


CDTI

Cockpit Display of Traffic Information

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:CDTI


CFMU

Central Flow Management Unit

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:CFMU


CNS

Communications, navigation and surveillance

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:CNS


COM

Communications

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:COM


COP

Change-over point

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:COP


CPDLC

Controller-pilot data link communications

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:CPDLC


CPL

Current flight plan (message type designator)

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:CPL


CTA

Control Area

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:CTA


D-ATIS

Data link automatic terminal information service

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:D-ATIS


DA

Decision Altitude

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:DA


DCP

Datum Crossing Point

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:DCP


DCT

Direct (in relation to flight-plan clearances and type of approach)

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:DCT


DH

Decision Height

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:DH


DIC

Diplomatic Clearance

Source: EU/EC European Defence Agency;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:DIC


DLIC

Data link initiation capability

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:DLIC


DME

Distance measuring equipment

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:DME


DSLT

Airport Departure Slot

Source: EUROCONTROL ATM Lexicon;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:DSLT


DVOR

Doppler VOR

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:DVOR


eAIP

Electronic AIP

Source: ICAO Annex 15, Thirteenth Edition;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:eAIP


EET

Estimated Elapsed Time

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:EET


EIBT

Estimated In-Block Time

Source: EUROCONTROL A-CDM Implementation manual;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:EIBT


ELDT

Estimated Landing Time

Source: EUROCONTROL A-CDM Implementation manual;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ELDT


ELEV

Elevation

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ELEV


ELT

Emergency Locator Transmitter

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ELT


EOBT

Estimated off-block time

Source: EUROCONTROL A-CDM Implementation manual;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:EOBT


EPR

Engine pressure ratio

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:EPR


ETA

Estimated time of arrival or estimating arrival

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ETA


ETD

Estimated time of departure or estimating departure

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ETD


ETO

Estimated time over e.g. significant point

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ETO


ETOT

Estimated Take-Off Time

Source: EUROCONTROL A-CDM Implementation manual;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ETOT


F

Farad

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:F


FAC

Facilities

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:FAC


FAF

Final approach fix

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:FAF


FANS

Future Air Navigation System

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:FANS


FATO

Final approach and take-off area

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:FATO


FDPS

Flight data processing system

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:FDPS


FF-ICE

Flight and Flow Information for a Collaborative Environment

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:FF-ICE


FIC

Flight Information Centre

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:FIC


FIR

Flight information region

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:FIR


FIS

Flight information service

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:FIS


FMP

Flow Management Position

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:FMP


FMS

Flight management system

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:FMS


FPAP

Flight path alignment point

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:FPAP


FPL

Filed Flight Plan

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:FPL


ft

Feet (dimensional unit)

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ft


FTP

Fictitious threshold point

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:FTP


GA

General Aviation

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:GA


GANIS

Global Air Navigation Industry Symposium

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:GANIS


GARP

GBAS azimuth reference point

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:GARP


GBAS

Ground-Based Augmentation System

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:GBAS


GLONASS

Global orbiting navigation satellite system

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:GLONASS


GNSS

Global navigation satellite system

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:GNSS


GPS

Global positioning system

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:GPS


GRIB

Processed meteorological data in the form of grid point values expressed in binary form (aeronautical meteorological code)

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:GRIB


GUFI

Globally Unique Flight Identifier

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:GUFI


H

Orthometric Height

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:H


H

Henry

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:H


HAPI

Helicopter approach path indicator

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:HAPI


HGT

Height or height above

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:HGT


HZ

Hertz (cycle per second)

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:HZ


IAF

Initial Approach Fix

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:IAF


IAP

Instrument Approach Procedure

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:IAP


IAS

Indicated airspeed

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:IAS


IATA

International Air Transport Association

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:IATA


ICAO

International Civil Aviation Organization

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ICAO


ID

Identifier or identify

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ID


IF

Intermediate Approach Fix

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:IF


IFPS

Integrated Initial Flight Plan Processing System

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:IFPS


IFR

Instrument flight rules

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:IFR


ILS

Instrument landing system

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:ILS


IMC

Instrument meteorological conditions

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:IMC


J

Joule

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:J


K

Kelvin

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:K


KG

Kilogram

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:KG


KHZ

Kilohertz

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:KHZ


KM

Kilometres

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:KM


KMH

Kilometres per hour

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:KMH


KT

Knot

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:KT


KW

Kilowatts

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:KW


L

Litre

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:L


LDA

Landing Distance Available

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:LDA


LDAH

Landing distance available (for helicopters)

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:LDAH


LLWS

Low Level Wind Shear

Source: FAA (Federal Aviation Administration);
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:LLWS


lm

Lumen

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:lm


LORAN

long range air navigation system

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:LORAN


LPV

Localizer Precision approach with Vertical guidance

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:LPV


LTP

Landing threshold point

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:LTP


LVL

Level

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:LVL


LVP

Low Visibility Procedures

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:LVP


m

Metre

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:m


MAHF

Missed approach holding fix

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:MAHF


MAPT

Missed approach point

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:MAPT


MAX

Maximum

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:MAX


MDA

Minimum descent altitude

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:MDA


MDCRS

Meteorological Data Collection and Reporting System

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:MDCRS


MDH

Minimum descent height

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:MDH


MEA

Minimum en-route altitude

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:MEA


MET

Meteorological or meteorology

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:MET


MET REPORT

Local routine meteorological report (in abbreviated plain language)

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:MET_REPORT


METAR

Aviation routine weather report (in aeronautical meteorological code)

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:METAR


MHZ

Megahertz

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:MHZ


MKR

Marker Radio Beacon

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:MKR


MLS

Microwave landing system

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:MLS


MMS

Mission Management System

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:MMS


MNM

Minimum

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:MNM


MNPS

Minimum navigation performance specifications

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:MNPS


MOCA

Minimum obstacle clearance altitude

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:MOCA


MOPS

Minimum Operational Performance Standards

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:MOPS


MPS

Metres per second

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:MPS


MSA

Minimum Sector Altitude

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:MSA


MSL

Mean sea level

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:MSL


MSSR

Monopulse secondary surveillance radar

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:MSSR


MWO

Meteorological Watch Office

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:MWO


N

Newton

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:N


NAT

North Atlantic

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:NAT


Navigation

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:NAV


NDB

Non-directional radio beacon

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:NDB


NM

Nautical miles

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:NM


NOF

International NOTAM Office

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:NOF


NOTAM

Notice to Airmen

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:NOTAM


NOZ

Normal operating zone

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:NOZ


NPA

Non-precision approach

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:NPA


NTZ

No transgression zone

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:NTZ


O

Ohm

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:O


OBST

Obstacle

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:OBST


OCA

Obstacle Clearance Altitude

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:OCA


OCH

Obstacle Clearance Height

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:OCH


OFIS

Operational Flight Information Service

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:OFIS


OFZ

Obstacle free zone

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:OFZ


OLDI

On-line data interchange

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:OLDI


OPMET

Operational meteorological (information)

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:OPMET


PA

Precision Approach

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:PA


PANS

Procedures for air navigation services

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:PANS


PAPI

Precision approach path indicator

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:PAPI


PAR

Precision Approach Radar

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:PAR


PAX

Passenger(s)

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:PAX


PBN

Performance Based Navigation

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:PBN


PIB

Pre-flight information bulletin

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:PIB


PIREP

Pilot Report

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:PIREP


PRP

Point-in-space reference point

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:PRP


PSR

Primary surveillance radar

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:PSR


QFE

Atmospheric pressure at aerodrome elevation (or at runway threshold)

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:QFE


QNH

Altimeter sub-scale setting to obtain elevation when on the ground

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:QNH


RA

Resolution Advisory

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:RA


RCP

Required Communications Performance

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:RCP


RESA

Runway end safety area

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:RESA


RIF

Reclearance in flight

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:RIF


RNAV

Area navigation

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:RNAV


RNP

Required Navigation Performance

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:RNP


RPL

Repetitive flight plan

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:RPL


RSA

Runway safety area

Source: FAA (Federal Aviation Administration);
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:RSA


RTODAH

Rejected take-off distance available (for helicopters)

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:RTODAH


RVR

Runway visual range

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:RVR


RVSM

Reduced Vertical Separation Minimum

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:RVSM


S

Siemens

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:S


SAR

Search and Rescue

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:SAR


SBAS

Satellite-based augmentation system

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:SBAS


SDF

(i) Step down fix (ii) Simplified Directional Facility

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:SDF


SEL

Sound Exposure Level

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:SEL


SELCAL

Selective Calling System

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:SELCAL


SHF

Super high frequency [3 000 to 30 000 MHz]

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:SHF


SID

Standard instrument departure

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:SID


SIGMET

Information concerning en-route weather phenomena which may affect the safety of aircraft operations

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:SIGMET


SLA

Seaplane Landing Area

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:SLA


SNOCLO

Aerodrome closed due to snow (used in METAR/SPECI)

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:SNOCLO


SPECI

Aerodrome special meteorological report (in meteorological code)

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:SPECI


SRE

Surveillance radar element of precision

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:SRE


SSR

Secondary surveillance radar

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:SSR


STA

Straight-in Approach

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:STA


STAR

Standard instrument arrival

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:STAR


SUP

Supplement (AIP Supplement)

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:SUP


Sv

Sievert

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:Sv


t

Tonne

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:t


T

Tesla

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:T


TAA

Terminal Arrival Altitude

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:TAA


TACAN

UHF tactical air navigation aid

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:TACAN


TAF

Terminal Aerodrome Forecast

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:TAF


TAR

Terminal Airspace Radar

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:TAR


TAS

True airspeed

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:TAS


TCAC

Tropical Cyclone Advisory Centre

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:TCAC


TLOF

Touchdown and lift-off area

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:TLOF


TMA

Terminal control area

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:TMA


TOBT

Target off-block time

Source: EUROCONTROL A-CDM Implementation manual;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:TOBT


TOC

Top of Climb

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:TOC


TOD

Top of Descent

Source: SESAR;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:TOD


TODA

Take-off distance available

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:TODA


TODAH

Take-off distance available (for helicopters)

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:TODAH


TORA

Take-off run available

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:TORA


TR

Track

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:TR


TRA

Temporary Reserved Airspace

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:TRA


TREND

Trend forecast

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:TREND


TS

Traffic Synchronisation

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:TS


TSAT

Target Start Up Approval Time

Source: EUROCONTROL A-CDM Implementation manual;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:TSAT


TWR

Aerodrome control tower or aerodrome control

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:TWR


UAC

Upper area control centre

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:UAC


UAS

Unmanned Aircraft System

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:UAS


UAV

Unmanned Aerial Vehicle

Source: ICAO Doc 9882, 1st Ed;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:UAV


UHF

Ultra high frequency [300 to 3 000 MHz]

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:UHF


UIR

Upper flight information region

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:UIR


UTC

Coordinated Universal Time

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:UTC


V

Volt

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:V


VAAC

Volcanic Ash Advisory Centre

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:VAAC


VASIS

Visual approach slope indicator systems

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:VASIS


VFR

Visual flight rules

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:VFR


VGSI

Visual Glide Slope Indicator

Source: EUROCONTROL-FAA AIXM v.5.1;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:VGSI


VHF

Very high frequency

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:VHF


VIP

Very important person

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:VIP


VMC

Visual meteorological conditions

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:VMC


VNAV

Vertical Navigation

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:VNAV


Voice-ATIS

Voice Automatic Terminal Information Service

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:Voice-ATIS


VOR

VHF omnidirectional radio range

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:VOR


W

Watt

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:W


WAAS

Wide area augmentation system

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:WAAS


WAFC

World area forecast centre

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:WAFC


Wb

Weber

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:Wb


WGS

World Geodetic System

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:WGS


WGS84

World Geodetic System - 1984

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:WGS84


WINTEM

Wind and temperature information

Source: ICAO;
urn: urn:aero:airm:1.0.0:ContextualModel:Abbreviations:WINTEM